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Detection of weak target for MIMO radar based on Hough transform

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Journal of Systems Engineering and Electronics 2009年第1期20卷 76-80页

作者： Zeng Jiankui he zishu School of Electronic Engineering Univ. of Electronic Science and Technology of China Chengdu 610054 P. R. China

An effective method of multiple input multiple output （MIMO） radar weak target detection is proposed based on the Hough transform. The detection time duration is divided into multiple coherent processing intervals （CPIs）. Within each CPI, conventional methods such as fast Fourier transform （FFT） is exploit to coherent inte- grating in same range cell. Furthermore, noncoherent integration through several range cells can be implemented by Hough transform among all CPIs. Thus, higher integration gain can be obtained. Simulation results are also given to demonstrate that the detection performance of weak moving target can be dramatically improved.

关键词： MIMO radar weak target detection Hough transform noncoherent integration.

Dwell scheduling algorithm for multifunction phased array radars based on the scheduling gain

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Journal of Systems Engineering and Electronics 2008年第3期19卷 479-485页

作者： Cheng Ting he zishu Tang Ting School of Electronic Engineering Univ. of Electronic Science and Technology Chengdu 610054 P. R. China

A real-time dwell scheduling model, which takes the time and energy constraints into account is founded from the viewpoint of scheduling gain. Scheduling design is turned into a nonlinear programming procedure. The real-time dwell scheduling algorithm based on the scheduling gain is presented with the help of two heuristic rules. The simulation results demonstrate that compared with the conventional adaptive scheduling method, the algorithm proposed not only increases the scheduling gain and the time utility but also decreases the task drop rate.

关键词： multifunction phased array radar dwell scheduling pulse interleaving time and energy constraint.

MIMO radar dwell scheduling based on novel pulse interleaving technique

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Journal of Systems Engineering and Electronics 2013年第2期24卷 234-241页

作者： Ting Cheng Wenwen Liao zishu he School of Electronic Engineering University of Electronic Science and Technology of China

According to the signal processing characteristic of MIMO radars,an adaptive dwell scheduling algorithm is *** is based on a novel pulse interleaving technique,which makes full use of transmitting,waiting and receiving durations of radar *** utilization of transmitting duration is unique for MIMO radars and is realized through transmitting duration *** results show that,compared with the conventional scheduling algorithm,the scheduling performance of MIMO radars can be improved effectively by the proposed algorithm,and the scheduling rule can be chosen arbitrarily when using the proposed algorithm.

关键词： multiple input multiple output(MIMO) radar dwell scheduling pulse interleaving time constraint energy constraint

Novel radar dwell scheduling algorithm based on pulse interleaving

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Journal of Systems Engineering and Electronics 2009年第2期20卷 247-253页

作者： Cheng Ting he zishu Tang Ting School of Electronic Engineering Univ. of Electronic Science and Technology Chengdu 610054 P. R. China

The problem of scheduling radar dwells in multifunction phased array radar systems is addressed. A novel dwell scheduling algorithm is proposed. The whole scheduling process is based on an online pulse interleaving technique. It takes the system timing and energy constraints into account. In order to adapt the dynamic task load, the algorithm considers both the priorities and deadlines of tasks. The simulation results demonstrate that compared with the conventional adaptive dwell scheduling algorithm, the proposed one can improve the task drop rate and system resource utility effectively.

关键词： dwell scheduling pulse interleaving energy constraint priority deadline

Bayesian track-before-detect algorithm for nonstationary sea clutter

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Journal of Systems Engineering and Electronics 2021年第6期32卷 1338-1344页

作者： XU Cong he zishu LIU Haicheng LI Yadan Department of Information and Communication University of Electronic Science and Technology of ChinaChengdu 610051China Department of Electrical and Information Engineering Heilongjiang Institute of EngineeringHarbin 150026China College of Economics and Management University of Chinese Academy of SciencesBeijing 100049China

Radar detection of small targets in sea clutter is a particularly demanding task because of the nonstationary characteristic of sea *** track-before-detect(TBD)filter is an effective way to increase the signal-to-clutter ratio(SCR),thus improving the detection performance of small targets in sea *** cope with the nonstationary characteristic of sea clutter,an easily-implemented Bayesian TBD filter with adaptive detection threshold is proposed and a new parameter estimation method is devised which is integrated into the detection *** detection threshold is set according to the parameter estimation result under the framework of information *** detection of closely spaced targets,those within the same range cell as the one under test are treated as contribution to sea clutter,and a successive elimination method is adopted to detect *** results prove the effectiveness of the proposed algorithm in detecting small targets in nonstationary sea clutter,especially closely spaced ones.

关键词： small target track-before-detect(TBD) nonstationary sea clutter closely spaced target

A lightweight false alarm suppression method in heterogeneous change detection

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Journal of Systems Engineering and Electronics 2024年第4期35卷 899-905页

作者： XU Cong he zishu LIU Haicheng School of Electronic and Information Engineering Heilongjiang Institute of EngineeringHarbin 150026China School of Information and Communication Engineering University of Electronic Science and Technology of ChinaChengdu 611731China

Overlooking the issue of false alarm suppression in heterogeneous change detection leads to inferior detection *** paper proposes a method to handle false alarms in heterogeneous change detection.A lightweight network of two channels is bulit based on the combination of convolutional neural network(CNN)and graph convolutional network(GCN).CNNs learn feature difference maps of multitemporal images,and attention modules adaptively fuse CNN-based and graph-based features for different *** with a new kernel filter adaptively distinguish between nodes with the same and those with different labels,generating change *** evaluation on two datasets validates the efficacy of the pro-posed method in addressing false alarms.

关键词： convolutional neural network(CNN) graph convolu-tional network(GCN) heterogeneous change detection lightweight false alarm suppression

Modified Eigendecomposition DOA EstimateAlgorithms and Field Test Studiesfor Super-Resolution

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Journal of Systems Engineering and Electronics 2000年第4期11卷 17-23页

作者： he zishu Huang Zhengxing Xiang Jingcheng University of Electronic Science and Technology of China Chengdu 610054 P. R. China

The signal direction of arrival (DOA) estimate algorithm based on the eigendecomposition of the modified covariance matrix is introduced in this paper. A field test system consisting of a 4-element linear array and a meter band radar is also presented, which is applied to the experimental studies of the algorithms in the practical performances. The results of the test indicate that when SNR is only 5.85 dB, two airplanes being 0.25 beam width apart in azimuth can be resolved clearly.

关键词： Array signal processing Signal DOA estimate Super-resolution Eigendecompositiot

Performances of improved Tent chaos-based FM radar signal

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Journal of Systems Engineering and Electronics 2012年第3期23卷 385-390页

作者： Shaobin Xie zishu he Jinfeng Hu Lidong Liu Jichun Pan School of Electronic Engineering University of Electronic Science and Technology of China Chengdu 611731 P. R. China The Information and Navigation Institute Air Force Engineering University of PLA Xi＇an 710077 P. R. China School of Humanities Economics and Laws Northwestern Polytechnical University Xi＇an 710068 P. R. China

A novel algorithm is proposed to solve the poor per- formance problem of the Tent chaos-based frequency modulation （FM） signal for range-Doppler imaging, which takes it into complex multi-segment system by increasing its segments. The simulation results show that the effectiveness of the proposed algorithm, as well as the performance of the improved Tent FM signal is obvious in a multipath or noise propagation environment.

关键词： chaos-based frequency modulation signal Tent map multipath Lyapunov exponent autocorrelation ambiguity function

ORTHOGONAL DISCRETE FREQUENCY-CODING WAVEFORM DESIGN FOR MIMO RADAR

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Journal of Electronics(China) 2008年第4期25卷 471-476页

作者： Liu Bo he zishu Institute of Electronic Engineering University of Electronic Science and Technology of China Chengdu 610054 China

Design of orthogonal code sets with ideal correlation properties is crucial for orthogonalMultiple Input Multiple Output(MIMO)radar.A modified Genetic Algorithm(GA)is proposed tonumerically design orthogonal Discrete Frequency-Coding Waveforms(DFCWs)with good correlationproperties for MIMO *** of the designed results are presented,and their correlation propertiesare better than those presented in *** effect of Doppler frequency shift on the performanceof these signals is simply *** results and comparisons show that the proposedalgorithm is more effective for the design of DFCWs with superior aperiodic correlation properties.

关键词： Multiple Input Multiple Output (MIMO) radar Netted radar Ambiguity function Genetic Algorithm (GA) Discrete Frequency-Coding Waveforms (DFCWs)